Use the Canon CB-570 Car Battery Cable with the LC-E4 and CG-570 Battery Charger to charge your camera/camcorder battery packs when you are on the move. Use the CB-570 car battery cable to connect your LC-E4 & CG-570 Battery Charger when you're on the go so you've always got the charge you need. 3-Pin Camera Plug to Cigarette Lighter Male Plug. Works with Canon EOS-1Ds Mark III, EOS-1D Mark IV, EOS-1D Mark III DSLR Cameras.
Note: It cannot be used to power the camcorder or camera directly.